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POC# DataTable forgetting it's column(s) after extended use
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copied!<p>I am using a DataTable in my .Net 3.5 application to store 1 column, with some records that contain a filename.</p> <p>Here is my code on how and where I initialize my DataTable:</p> <pre><code>public partial class MainForm : Form { DataTable memTable_CurrentTransfers = new DataTable(); private void MainForm_Load(object sender, EventArgs e) { memTable_CurrentTransfers.Columns.Add("fileName", typeof (string)); </code></pre> <p><br>Here is how I add the filename to my DataTable in another method of my application:</p> <pre><code>memTable_CurrentTransfers.Rows.Add(fileName); </code></pre> <p><br>Every 30 minutes, I launch a thread that executes this code:</p> <pre><code>public void CheckUploads() { DataView view2 = memTable_CurrentTransfers.DefaultView; for (int i = 0; i < view2.Count; i++) { string tmpString = view2[i][0].ToString(); </code></pre> <p><br>Everything works great, but after after my application is running for a while, my users are starting to get this error in the CheckUploads() method</p> <blockquote> <p>The given key was not present in the dictionary. at System.ThrowHelper.ThrowKeyNotFoundException() at System.Collections.Generic.Dictionary`2.get_Item(TKey key) at System.Data.DataView.get_Item(Int32 recordIndex)</p> </blockquote> <p><br>I think that my column is disappearing from my DataTable.</p> <p>Can please anyone tell me why this is happening and how I can stop this from occurring? Is there another way I should be initializing my DataTable so it is available from all methods inside of my application?</p>

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